From 7999bd3ad9815f49c31d4ef9798adbbd87ba0094 Mon Sep 17 00:00:00 2001
From: Yasuyuki KOZAKAI <yasuyuki@netfilter.org>
Date: Tue, 24 Jul 2007 06:57:56 +0000
Subject: Add IPv6 support to tcpmss match

---
 extensions/libipt_tcpmss.c | 152 ---------------------------------------------
 1 file changed, 152 deletions(-)
 delete mode 100644 extensions/libipt_tcpmss.c

(limited to 'extensions/libipt_tcpmss.c')

diff --git a/extensions/libipt_tcpmss.c b/extensions/libipt_tcpmss.c
deleted file mode 100644
index e17c0202..00000000
--- a/extensions/libipt_tcpmss.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* Shared library add-on to iptables to add tcp MSS matching support. */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-
-#include <iptables.h>
-#include <linux/netfilter_ipv4/ipt_tcpmss.h>
-
-/* Function which prints out usage message. */
-static void
-help(void)
-{
-	printf(
-"tcpmss match v%s options:\n"
-"[!] --mss value[:value]	Match TCP MSS range.\n"
-"				(only valid for TCP SYN or SYN/ACK packets)\n",
-IPTABLES_VERSION);
-}
-
-static struct option opts[] = {
-	{ "mss", 1, 0, '1' },
-	{0}
-};
-
-static u_int16_t
-parse_tcp_mssvalue(const char *mssvalue)
-{
-	unsigned int mssvaluenum;
-
-	if (string_to_number(mssvalue, 0, 65535, &mssvaluenum) != -1)
-		return (u_int16_t)mssvaluenum;
-
-	exit_error(PARAMETER_PROBLEM,
-		   "Invalid mss `%s' specified", mssvalue);
-}
-
-static void
-parse_tcp_mssvalues(const char *mssvaluestring,
-		    u_int16_t *mss_min, u_int16_t *mss_max)
-{
-	char *buffer;
-	char *cp;
-
-	buffer = strdup(mssvaluestring);
-	if ((cp = strchr(buffer, ':')) == NULL)
-		*mss_min = *mss_max = parse_tcp_mssvalue(buffer);
-	else {
-		*cp = '\0';
-		cp++;
-
-		*mss_min = buffer[0] ? parse_tcp_mssvalue(buffer) : 0;
-		*mss_max = cp[0] ? parse_tcp_mssvalue(cp) : 0xFFFF;
-	}
-	free(buffer);
-}
-
-/* Function which parses command options; returns true if it
-   ate an option */
-static int
-parse(int c, char **argv, int invert, unsigned int *flags,
-      const void *entry,
-      unsigned int *nfcache,
-      struct xt_entry_match **match)
-{
-	struct ipt_tcpmss_match_info *mssinfo =
-		(struct ipt_tcpmss_match_info *)(*match)->data;
-
-	switch (c) {
-	case '1':
-		if (*flags)
-			exit_error(PARAMETER_PROBLEM,
-				   "Only one `--mss' allowed");
-		check_inverse(optarg, &invert, &optind, 0);
-		parse_tcp_mssvalues(argv[optind-1],
-				    &mssinfo->mss_min, &mssinfo->mss_max);
-		if (invert)
-			mssinfo->invert = 1;
-		*flags = 1;
-		break;
-	default:
-		return 0;
-	}
-	return 1;
-}
-
-static void
-print_tcpmss(u_int16_t mss_min, u_int16_t mss_max, int invert, int numeric)
-{
-	if (invert)
-		printf("! ");
-
-	if (mss_min == mss_max)
-		printf("%u ", mss_min);
-	else
-		printf("%u:%u ", mss_min, mss_max);
-}
-
-/* Final check; must have specified --mss. */
-static void
-final_check(unsigned int flags)
-{
-	if (!flags)
-		exit_error(PARAMETER_PROBLEM,
-			   "tcpmss match: You must specify `--mss'");
-}
-
-/* Prints out the matchinfo. */
-static void
-print(const void *ip,
-      const struct xt_entry_match *match,
-      int numeric)
-{
-	const struct ipt_tcpmss_match_info *mssinfo =
-		(const struct ipt_tcpmss_match_info *)match->data;
-
-	printf("tcpmss match ");
-	print_tcpmss(mssinfo->mss_min, mssinfo->mss_max,
-		     mssinfo->invert, numeric);
-}
-
-/* Saves the union ipt_matchinfo in parsable form to stdout. */
-static void
-save(const void *ip, const struct xt_entry_match *match)
-{
-	const struct ipt_tcpmss_match_info *mssinfo =
-		(const struct ipt_tcpmss_match_info *)match->data;
-
-	printf("--mss ");
-	print_tcpmss(mssinfo->mss_min, mssinfo->mss_max,
-		     mssinfo->invert, 0);
-}
-
-static struct iptables_match tcpmss = {
-	.next		= NULL,
-	.name		= "tcpmss",
-	.version	= IPTABLES_VERSION,
-	.size		= IPT_ALIGN(sizeof(struct ipt_tcpmss_match_info)),
-	.userspacesize	= IPT_ALIGN(sizeof(struct ipt_tcpmss_match_info)),
-	.help		= &help,
-	.parse		= &parse,
-	.final_check	= &final_check,
-	.print		= &print,
-	.save		= &save,
-	.extra_opts	= opts
-};
-
-void _init(void)
-{
-	register_match(&tcpmss);
-}
-- 
cgit v1.2.3